I am experiencing this exact issue this user reported a few years ago: Exiting Freecam Keeps MouseBehavior in LockCenter
When I exit freecam mode (shift+p), my mouse is locked in centre. I attempted to change my camera mode but it doesn’t fix the issue. I tried toggling shiftlock too, no changes. I noticed this happening a week ago.
I am using Windows 10. It appears to happen with every game (that I have access to freecam).
Expected behavior
I expect to be able to move around my mouse after exiting freecam.